TOSHIBA TC74HC191AF

TC74HC191AP/AF
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74HC191AP,TC74HC191AF
4-Bit Binary Up/Down Counter
The TC74HC191A are high speed CMOS 4-BIT UP/DOWN
COUNTERs fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
The TC74HC191A is 4-bit binary up/down counter.
They have an asynchronous load input (LOAD) which is active
low.
The direction of counting is determined by the level of
DOWN/UP. When D/U is low, the counter counts up; when D/U is
high, it counts down. Counting occurs on the positive going
transition of the clock input.
Enable input (ENABLE) and two carry inputs (RIPPLE
CLOCK OUT, MAX/MIN) are provided to permit easy cascading
of the counters, which facilitates easy implementation of N-bit
counters without using external gates.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC74HC191AP
TC74HC191AF
Features
•
High speed: fmax = 48 MHz (typ.) at VCC = 5 V
•
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
•
High noise immunity: VNIH = VNIL = 28% VCC (min)
•
Output drive capability: 10 LSTTL loads
•
•
Symmetrical output impedance: |IOH| = IOL = 4 mA (min)
∼ tpHL
Balanced propagation delays: tpLH −
•
Wide operating voltage range: VCC (opr) = 2~6 V
•
Pin and function compatible with 74LS191
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
Pin Assignment
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TC74HC191AP/AF
IEC Logic Symbol
Truth Table
Inputs
Outputs
LOAD
ENABLE
D/ U
CK
QA
X
a
QB
QC
QD
b
c
d
Function
L
X
X
H
L
L
Up Count
Preset Data
Up Count
H
L
H
Down Count
Down Count
H
H
X
No Change
No Count
H
X
X
No Change
No Count
X: Don’t care
a~d: Inputs level of A~D
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TC74HC191AP/AF
Timing Chart
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TC74HC191AP/AF
System Diagram
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TC74HC191AP/AF
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range
VCC
−0.5~7
V
DC input voltage
VIN
−0.5~VCC + 0.5
V
VOUT
−0.5~VCC + 0.5
V
Input diode current
IIK
±20
mA
Output diode current
IOK
±20
mA
DC output current
IOUT
±25
mA
DC VCC/ground current
ICC
±50
mA
Power dissipation
PD
500 (DIP) (Note 2)/180 (SOP)
mW
Storage temperature
Tstg
−65~150
°C
DC output voltage
Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Note 2: 500 mW in the range of Ta = −40 to 65°C. From Ta = 65 to 85°C a derating factor of −10 mW/°C shall be
applied until 300 mW.
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
2~6
V
Input voltage
VIN
0~VCC
V
VOUT
0~VCC
V
Operating temperature
Topr
−40~85
°C
Input rise and fall time
tr, tf
Output voltage
0~1000 (VCC = 2.0 V)
0~500 (VCC = 4.5 V)
ns
0~400 (VCC = 6.0 V)
Note:
The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
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TC74HC191AP/AF
Electrical Characteristics
DC Characteristics
Characteristics
High-level input
voltage
Low-level input
voltage
High-level output
voltage
Min
Typ.
Max
Min
Max
2.0
1.50
⎯
⎯
1.50
⎯
4.5
3.15
⎯
⎯
3.15
⎯
6.0
4.20
⎯
⎯
4.20
⎯
2.0
⎯
⎯
0.50
⎯
0.50
4.5
⎯
⎯
1.35
⎯
1.35
6.0
⎯
⎯
1.80
⎯
1.80
2.0
1.9
2.0
⎯
1.9
⎯
IOH = −20 μA
4.5
4.4
4.5
⎯
4.4
⎯
6.0
5.9
6.0
⎯
5.9
⎯
IOH = −4 mA
4.5
4.18
4.31
⎯
4.13
⎯
IOH = −5.2 mA
6.0
5.68
5.80
⎯
5.63
⎯
2.0
⎯
0.0
0.1
⎯
0.1
4.5
⎯
0.0
0.1
⎯
0.1
6.0
⎯
0.0
0.1
⎯
0.1
IOL = 4 mA
4.5
⎯
0.17
0.26
⎯
0.33
IOL = 5.2 mA
6.0
⎯
0.18
0.26
⎯
0.33
⎯
VIL
VIN
= VIH or VIL
IOL = 20 μA
Low-level output
voltage
VOL
Ta = −40~85°C
VCC (V)
⎯
VIH
VOH
Ta = 25°C
Test Condition
Symbol
VIN
= VIH or VIL
Unit
V
V
V
V
Input leakage
current
IIN
VIN = VCC or GND
6.0
⎯
⎯
±0.1
⎯
±1.0
μA
Quiescent supply
current
ICC
VIN = VCC or GND
6.0
⎯
⎯
4.0
⎯
40.0
μA
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TC74HC191AP/AF
Timing Requirements (input: tr = tf = 6 ns)
Characteristics
Symbol
Minimum pulse width
tW (H)
(CK)
tW (L)
Minimum pulse width
( LOAD )
Minimum set-up time
( ENABLE , D/ U )
Minimum set-up time
(DATA- LOAD )
Minimum hold time
( ENABLE , D/ U )
Minimum hold time
(DATA- LOAD )
Minimum removal time
Clock frequency
Ta = 25°C
Test Condition
⎯
⎯
tW (L)
⎯
ts
⎯
ts
⎯
th
⎯
th
⎯
trem
⎯
f
7
Ta =
−40
~85°C
VCC (V)
Typ.
Limit
Limit
2.0
⎯
100
125
4.5
⎯
20
25
6.0
⎯
17
21
2.0
⎯
75
95
4.5
⎯
15
19
6.0
⎯
13
16
2.0
⎯
150
190
4.5
⎯
30
38
6.0
⎯
26
33
2.0
⎯
50
65
4.5
⎯
10
13
6.0
⎯
9
11
2.0
⎯
0
0
4.5
⎯
0
0
6.0
⎯
0
0
2.0
⎯
0
0
4.5
⎯
0
0
6.0
⎯
0
0
2.0
⎯
50
65
4.5
⎯
10
13
6.0
⎯
9
11
2.0
⎯
5
4
4.5
⎯
25
20
6.0
⎯
29
24
Unit
ns
ns
ns
ns
ns
ns
ns
MHz
2007-10-01
TC74HC191AP/AF
AC Characteristics (CL = 15 pF, VCC = 5 V, Ta = 25°C, input: tr = tf = 6 ns)
Characteristics
Output transition time
Symbol
tTLH
tTHL
Propagation delay time
tpLH
(CK-Q)
tpHL
Propagation delay time
tpLH
(CK- RCO )
tpHL
Propagation delay time
tpLH
(CK-MAX/MIN)
tpHL
Propagation delay time
tpLH
( LOAD -Q)
tpHL
Propagation delay time
tpLH
(DATA-Q)
tpHL
Propagation delay time
tpLH
( ENABLE - RCO )
tpHL
Propagation delay time
tpLH
(D/ U - RCO )
tpHL
Propagation delay time
tpLH
(D/ U -MAX/MIN)
tpHL
Maximum clock frequency
fmax
8
Test Condition
Min
Typ.
Max
Unit
⎯
⎯
4
8
ns
⎯
⎯
18
31
ns
⎯
⎯
10
20
ns
⎯
⎯
23
42
ns
⎯
⎯
21
35
ns
⎯
⎯
17
30
ns
⎯
⎯
11
17
ns
⎯
⎯
17
31
ns
⎯
⎯
15
27
ns
⎯
27
48
⎯
MHz
2007-10-01
TC74HC191AP/AF
AC Characteristics (CL = 50 pF, input: tr = tf = 6 ns)
Characteristics
Output transition time
Symbol
tTLH
tTHL
Propagation delay
time
tpLH
(CK-Q)
tpHL
Propagation delay
time
tpLH
(CK- RCO )
tpHL
Propagation delay
time
tpLH
(CK-MAX/MIN)
tpHL
Propagation delay
time
tpLH
( LOAD -Q)
tpHL
Propagation delay
time
tpLH
(DATA-Q)
tpHL
Propagation delay
time
tpLH
( ENABLE - RCO )
tpHL
Propagation delay
time
tpLH
(D/ U - RCO )
tpHL
Propagation delay
time
tpLH
(D/ U -MAX/MIN)
tpHL
Maximum clock
frequency
fmax
Input capacitance
CIN
Power dissipation
capacitance
CPD
Note:
(Note)
Ta = 25°C
Test Condition
Ta = −40~85°C
Unit
VCC (V)
Min
Typ.
Max
Min
Max
2.0
⎯
30
75
⎯
95
4.5
⎯
8
15
⎯
19
6.0
⎯
7
13
⎯
16
2.0
⎯
88
180
⎯
225
4.5
⎯
22
36
⎯
45
6.0
⎯
19
31
⎯
38
2.0
⎯
52
120
⎯
150
4.5
⎯
13
24
⎯
30
6.0
⎯
11
20
⎯
26
2.0
⎯
108
240
⎯
300
4.5
⎯
27
48
⎯
60
6.0
⎯
23
41
⎯
51
2.0
⎯
100
205
⎯
255
4.5
⎯
25
41
⎯
51
6.0
⎯
22
35
⎯
43
2.0
⎯
84
175
⎯
220
4.5
⎯
21
35
⎯
44
6.0
⎯
18
30
⎯
37
2.0
⎯
56
105
⎯
130
4.5
⎯
14
21
⎯
26
6.0
⎯
12
18
⎯
22
2.0
⎯
84
180
⎯
225
4.5
⎯
21
36
⎯
45
6.0
⎯
18
31
⎯
38
2.0
⎯
72
160
⎯
200
4.5
⎯
18
32
⎯
40
6.0
⎯
15
27
⎯
34
2.0
5
11
⎯
4
⎯
4.5
25
44
⎯
20
⎯
6.0
29
52
⎯
24
⎯
⎯
⎯
5
10
⎯
10
pF
⎯
⎯
101
⎯
⎯
⎯
pF
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC
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TC74HC191AP/AF
Package Dimensions
Weight: 1.00 g (typ.)
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TC74HC191AP/AF
Package Dimensions
Weight: 0.18 g (typ.)
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TC74HC191AP/AF
RESTRICTIONS ON PRODUCT USE
20070701-EN GENERAL
• The information contained herein is subject to change without notice.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his
document shall be made at the customer’s own risk.
• The products described in this document shall not be used or embedded to any downstream products of which
manufacture, use and/or sale are prohibited under any applicable laws and regulations.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patents or other rights of
TOSHIBA or the third parties.
• Please contact your sales representative for product-by-product details in this document regarding RoHS
compatibility. Please use these products in this document in compliance with all applicable laws and regulations
that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses
occurring as a result of noncompliance with applicable laws and regulations.
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